{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["GENE"], "input": "No significant differences existed between the two age groups in baseline characteristics , including treatment protocol , performance status , and serum lactate dehydrogenase ( LDH ) level ."}
{"GENE": ["serum lactate dehydrogenase", "LDH"]}